Optical Communication Device Mode Transition Notification
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Solution Overview
Problem
In industrial networks, slaves configured to switch between safe and user modes for logic circuit reconfiguration can experience data errors due to disconnection issues, leading to erroneous control data transmission.
Innovation Solution
An optical communication device with a dual-sided boot function and a notification mechanism for mode transitions, using a CDR circuit to separate clocks in serial data, ensures that mode transitions do not disconnect the industrial network, preventing erroneous data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the slave is rebooted to reconfigure the logic circuit in association with mode switching, then the logic circuit can be reconfigured between safe mode and user mode, but the communication with other devices in the industrial network is disconnected, causing data errors and erroneous control data transmission
Solution Approach 1:
The notification device transmits a notification signal to other devices before the slave completes its reboot and mode switching process. This preliminary notification allows other devices to prepare for the upcoming communication interruption, preventing them from transmitting data that would otherwise be lost or corrupted during the reboot process
Solution Approach 2:
The notification device provides feedback to other devices in the industrial network about the slave's operational state. By continuously notifying other devices of the mode switching status, the system maintains awareness of communication availability, allowing receiving devices to adjust their transmission behavior accordingly and avoid generating erroneous control data
Data Source
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AI summary
An optical communication device and a working machine are provided which are capable of suppressing, in a slave whose modes are switched, transmission of control data in which an error is being generated. The optical communication device includes a slave connected to an industrial network by optical communication and having a dual-sided boot function of a safe mode and a user mode and a notification device for transmitting transition notification information indicating that the slave has transitioned to the user mode of a dual-sided boot to another device in the industrial network.